From Release 4.0A, you can carry out postprocessing on the sales order cost estimate that was created using product costing with unit costing. This enables you to modify the quantity structure according to your needs or to plan additional costs, for example.
The costing variant in
Product Cost by Sales Order enables you to specify whether postprocessing of the product cost estimate with the unit cost estimate is allowed. Postprocessing can be set as a default in the standard system.
Check costing variants for product costing .
Further information is available in the documentation for Product Cost by Sales Order.